Transfer mechanism of calculating-machines



v.1. 0DHNER. TRANSFER MECHANISM .OF CALCULATING MACHINiES. APPLIQATION FILED MAY 15 1919.

1,377,269. v Patented IIIay10,192 1.

Iva/ed307- P ATENT OFFICE.

VALENTIN JAKOB ODH'N'ER, 0F STOGKHOLM, SWEDEN.

TRANSFER MECHANISM OF CALCULATING-MACHINES.

Specification of Letters Patent. Patented 'lVIay 10, 1921.

Appucation filed may 15, 1919. Serial No. 297,434.

T 0 all w ham it may concern Be it known that I, VALENTIN JAKoB ODI-INER, a subject of the Kingof Sweden, and resident of Karlaplan 2, btockholm, in the Kingdom of Sweden, have invented certain new and useful Improvements in Transfer Mechanism of Calculating -Machines, of which the following is a specification, reference being had therein to the accompanying drawing.

In calculating machines provided with rotatable calculating wheels, in which adjustvable pins are provided, which, while the calculating wheels are rotated, shift the indicating disks, ten -pins, hundred -p 1ns, etc., are provided, which are brought into operative position by a ten -transm1tt1ng arm. The said arm is shifted by a pm on the registering wheel belonging to the unit ten hundred etc., column and is locked in adjusted positionby a catch ing device. In calculating machlnes of this type hitherto used and shown for instance in the U. S. Patent No. 514,725 the fulcrum of the said ten -transmitting arm is so located, that the ten -pins, etc., during the rotation of the calculating wheel in one direction, especially if the wheel is rotated rapidly, throws the arm back from 1ts adjusted position, so that the ten -p1ns never act and miscalculation takes place. The object of this invention is to remove the said disadvantage in the highest degree poss ble and to so arrange the ten -transm1tt1ng arm, that the effort of the ten -p1ns, etc., to move the said arm out of its operat ve position (which effort never can be fully removed) is reduced to a minimum. A further object of the invention is to arrange the bearing surfaces, provided on the arm, and cooperating with the ten -p1ns, etc., in such manner, that the pins touch the arm substantially along their whole length.

In the accompanying drawing Figure 1 shows in a side view so much of a calculating machine as is necessary for illustrating the invention. Fig. 2 is an edge view of the ten -transmitting arm on a double scale.

1 is one of the calculating wheels, provided for instance with the ten -pins 2 and 3. The'said pins are, as usual, deflectable transversely of the Wheel. 4 is the intermediate wheel, which, actuated by the pins of the calculating wheel, shifts the registering wheel 5 and the indicating disk 6, the figures of the latter being visible through an opening in the casing of the ordinary carriage. 7 designates the ten -transmitting arm, which is swingable on. the rod or pin 8 and isbrought into. its operativeposition by a pin 6 provided on the indicating disk 6 and actuating a cam surface 7 X or 7 on the arm 7 as the indicating disk is rotated in the one or the other direction. For finding out the position of the rod 8 and thus the position of the arm 7 with relation to the pins 2,

3, when passing by the arm, in which the effort of the said pins to swing the arm out of its operative position is a minimum, one proceeds in the following manner. At the point, at which the pin 2 strikes the arm 7 a tangent a b to the wheel is drawn. At the point on the other hand, at which the pin 3 strikes the arm 7 a further tangent 0 d to the wheel 1 is drawn. The angle formed by the tangents a b and 0 d is bisected by means of a line 6 and the rod 8 is located on that line, as shown. Owing to the said arrangement the pins 2, 3 actuate the arm 7 in absolutely the same manner, a. e., the turning moments are equal, effected, as the pins 2, 3 strike the arm 7. The said turning moments tend, it

is true, to swing the arm outward from its operative position, but are reduced to a minimum. Any displacement of the rod 8 laterally results, evidently, in increasing one of the said turning moments and thus the risk of miscalculation.

In order that a great contact surface may be provided on the arm 7 for the pins 2 and 3 and thus the pins and the arm may be subjected to a reduced wear, the arm 7 is provided with a conical contact surface 9 for the said pins. The point of the conical surface is turned toward the center point of the wheel 1. f indicates the apex of the cone, of which the surface 9 forms a portion, and g is the generatrix of the cone, in two positions. Owing to the fact that the ten pins, etc., have a radial position the ends of the pins 2 and 3 projecting outside the periphery of the wheel 1 will bear against the contact surface 9 along their whole length, while the pins pass the arm 7 brou ht into its operative position. The arm has a projection 10 which is acted upon by the ordinary cam piece 11 provided on the wheel 1 and adapted to return the arm 7 into its inoperative position.

Having now described my invention, what I claim as new and desire to secure by Letters Patent is:

1. In a calculating machine the combination with calculating wheels, ten -pins, hundred -pins, etc., provided on the said wheels and defiectable laterally, of swingable ten -transmitting arms, adapted to force the said pins into operative position, the fulcrum ofthe said ten -transmitting arms being located inside the angle, formed by the tangents to the periphery of the calculating wheel at the points, at which the ten -pins, etc., strike the said arm.

2. In a calculating machine the combination with calculating wheels, ten -pins, hundred -pins, etc.-, provided on the said wheels and deflectable laterally, of swing able ten -transmitting arms, adapted to force the said pins into operative position, the fulcrum of the said ten -transmitting arms being located inside the angle, formed by the tangents to the periphery of the calculating Wheel at the points, at which the ten -pins, etc., strike the said arm, and the part of the ten -transmitting arms, cooperating With the ten -pins, etc, being conical, with the point directed toward the center point of the calculating wheel, substantially as described and for the purpose set forth.

In witness whereof, I have hereunto signed my name.

VALENTIN J AKOB ODHNER. 

